Quality of dealing: which brokers have the highest and the lowest rating?

As it was informed by "Market Leader (US)"

Quality of dealing: which brokers have the highest and the lowest rating?

News of forex rating of brokers. The quality of dealing is one of the main criteria for the assessment of any forex broker.

No trader would like the chosen broker to enable closing transactions (evidently making a profit, but not a loss), apply regular gapping even when the market is rather calm (due to which Euro/dollar spread will rise from 2 points to 15-20 points), regularly bring non-market quotations into its trading terminal in order to knock down stops, holds back (or even annuls by some invented or flimsy pretext) the earned profit, DC technical support and client’s department are rude to and offend their clients-traders, etc.